SanoJapanese From Japanese 佐 (sa) meaning "help, aid" and 野 (no) meaning "field, wilderness".
SasakiJapanese From Japanese 佐 (sa) meaning "help, aid" (repeated, indicated by the iteration mark 々) and 木 (ki) meaning "tree, wood".
SatōJapanese From Japanese 佐 (sa) meaning "help, aid" and 藤 (tō) meaning "wisteria". The final character might indicate a connection to the Fujiwara clan. This is the most common surname in Japan.